Re: Buried Reclaim Conveyors
Tonnage and product details would be nice to identify the crossection. Many assumption are made to guess at:
a) $3000/m installed
b) tonage +/- 1500 t/h-2000 t/h
c) how many feeders and type - vibratory? guess @ $350,000/ea
installed in addition to rate / meter of belt and culvert. Must include logic to control two or more
No soil conditions and many more guesses ■
Re: Buried Reclaim Conveyors
Maybe I should state a rational for the extreme expense of the feeders. I assume the whole arrangement is buried beneath a stockpile. The feeders need to have a superstructural support to carry the stockpile force and control the force on the vibratory feeder within the manufacturer's range. I doubt you can obtain enough head room in the buried culvert to fit the conveyor, feed chute, vibratory feeder and flow channel above the vibratory feeder. ■
Conveyor
Dear sir
yes you provide conveyor inside steel culvert . for feeding to conveyor you have to consider stationary rotary feeder . system can be designed and estimated cost can be worked out based on receipt of data.
a R SINGH ■
Re: Buried Reclaim Conveyors
Mr. Nordell, Mr. Singh, thanks for the reply.
We already have a conveyor on the property that handles about 1500 tons per hour, and is mostly buried, having 10 feeders to it. Our plant uses around 2200 tons per day of limestone on a good day. We have a stone silo that holds around 3000 tons. What we are envisioning is a conveyor that would run over top of this conveyor, which is below grade, perpendicular to it.
I doubt that the feeders would need to be that expensive. They would be vibratory feeders. At this point we would be looking at a conveyor that would feed onto the existing one, at the end. Currently we run with the stockpile over the end that is near the river dock. Feeders are not exotic, just mounted to the top of the pipe, with vibrating feeder under the chute. Angle of repose of the stone stops it from running continuously. Existing pipe is about 10 feet in diameter. I imagine it could be slightly smaller. I have also seen clamshell feeders installed in an application of this type.
With the winter inventory build, due to closing of shipping, the conveyor would end up burried much of the year and exposed for a few months per year. I would anticipate 4 feeders initially. Additional feeders would increase the amount of "live storage"
This isn't a new way of doing things, and somewhere in the world, there should be someone who has done it recently and has costs - I just need to find them. Thanks again for the post replys
Hcrosmun ■
Re: Buried Reclaim Conveyors
We have installed many conveyors inside culvert pipe underground at our operation. I can give you estimates of the culvert pipe installations when I get back into my office tomorrow.
Can you provide the following answers?
- What diameter pipe and thickness are you proposing?
- What is the size of the conveyor?
- Is the conveyor a channel frame or modular stringer style?
- Are you suspending from the top of the culvert or floor mounted?
We threw out all of our vibratory feeders in our reclaim trenches and installed feed gates operated by electric actuators. The actuators give us a 4-20 mA feed back signal representing percentage of gate opening. We control flow by simply adjusting the stop point based on this signal and have belt scales after the last gate. This gives us much better control.
Word of CAUTION when using culvert pipe. It is critical that the fill material around culvert be compacted evenly in layers of a thickness approved by the culvert manufacturer. Distortion of the culvert will occur if it is not uniformily loaded as it is being buried. It is unclear of your intent to simply bury the culvert with your product or if you intend to permanently bury it. I have seen culverts compress to the point of near failure when not properly compacted during installation. Once you have completely buried the culvert as per the manufacturers recommendation then you can create your stock pile over it.
If you get me the answers I will try to get back to you tomorrow with cost estimates. (CDN dollars)
Regards,
Gary Blenkhorn ■
Gary Blenkhorn
President - Bulk Handlng Technology Inc.
Email: garyblenkhorn@gmail.com
Linkedin Profile: http://www.linkedin.com/in/gary-blenkhorn-6286954b
Offering Conveyor Design Services, Conveyor Transfer Design Services and SolidWorks Design Services for equipment layouts.
Rough Costs On Buried Conveyor
Here is some rough costing from an actual estimate I did in 1999
One only reclaim tunnel 10' diameter x 140' long
complete with a 3' diameter x 110' escape tunnel $56,000 USD
This included 2 only 36" x 60" long ELECTRO-magnetic vibrating feeders F440 model SYNTRONS cw two only transition hoppers to fit a 10' diameter ARMCO tunnel and the feeders
$35,600 USD
1 only 36" x 120' SURGE PILE STACKER $61,000 USD
I ONLY 36" x 250' conveyor $60,000 USD
1 ONLY 36" x 120' conveyor $$49,500 USD
The feeders need NOT be overly EXPENSIVE, EM FEEDERS are readily and easily and standard useage for this type of job.
LIVE STORAGE PILE here was 4,000 tons ■
Buried reclaim conveyors
I am considering a reclaim conveyor inside a steel culvert pipe, with feeders installed in the top of the pipe. I would like to find approximate costs and so forth for a budgetary estimate.
Product to be reclaimed is rotary kiln stone sized dolomite and calcite. Delivered by vessel to a dock. Conveyor pipe and conveyor can be constructed on grade then buried with delivered product.
Anyone out there have rough costs per hundred feet of such an application? ■